Get a little healthier with these tips to prevent Blackberry thumb, maintain a healthy pregnancy weight, and choose the best sunscreen.

1. Don't let pregnancy weigh you down
Being at a healthy weight when you give birth may be crucial for the health of you and your baby. Pregnant women in a Kaiser Permanente study who gained more than 40 pounds were twice as likely to have a baby who weighed nine pounds or more, meaning a higher risk for birth complications and obesity. In a study from the Agency for Healthcare Research and Quality, weight-loss surgery patients who later became pregnant had a lower risk than obese women for developing gestational diabetes and high blood pressure. Talk to your doctor if you are (or plan to be) pregnant to determine your optimal weight and how to meet it.

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2. Celebrate Cinco de Mayo
Next time you buy chips, choose a brand after your own heart: Corazonas Heart-Healthy Whole Grain Tortilla Chips lower levels of "bad" LDL cholesterol, contain a whopping 18 grams of whole grains, and — most important — are muy delicioso.

3. Get sun-smarter
When it comes to sunscreen, you need to look beyond a high SPF and the words broad spectrum to make sure you're covered. In a recent study from Memorial Sloan-Kettering Cancer Center in New York City that tested 13 popular sunscreens, only five (including those made by Neutrogena, La Roche-Posay, and Coppertone) offered high protection from UVA rays, which cause wrinkles and skin cancer. To see if yours is up to par, check the ingredient list to make sure it contains 3 percent avobenzone and at least 7 percent octocrylene. Bonus points if the product also contains ecamsule, a UVA filter known as Mexoryl SX in L'Oréal brands (such as La Roche-Posay).

4. Prevent "BlackBerry thumb"
Texting and emailing from your Crackberr...er, BlackBerry or other PDA might be convenient, but it can also cause inflammation of the muscles and joints in your fingers, hands, and wrists, says Mark E. Pruzansky, M.D., director of Manhattan's HandSport Surgery Institute. To win the thumb war:

Type with your fingers instead of your thumbs, which have a limited arc of motion.

Pick a phone with a keyboard instead of a touch screen — finger-dragging is tough on your joints.